StopTech 01-07 BMW M3 E46 ZCP / 06-09 MZ4 Coupe Front BBK w/Trophy 355x32mm ST-40 Drilled Calipers

E46 M3 ZCP, Z4M StopTech Trophy 355 ST40R kit features: 20% lighter STR40 forged calipers, 50% better cooling airflow in Aerorotors, Hard-anodized coating on calipers and rotor hats, Forged caliper brackets with mounting studs, Pads included, Stainless brake lines included. Everything about the StopTech Trophy kits have been optimized for exclusive track use. This means lighter weight and specific design features dictated by extreme track requirements. BMW Trophy Kits feature all of the great advantages of a regular StopTech Big Brake Kit: the Balanced Brake Upgrade(R) approach that optimizes brake distribution to improve traction at all four corners, patented rotor cooling vanes for longer pad life and less fade, and the stiffest caliper designs in the industry. Where Trophy kits become extra special is in the details: the STR calipers are 20% lighter thanks to extra machining, the rotors have 50% more air airflow with a special mounting system for the rotor hat, and pad knock-back is eliminated by using floating hardware between the hat and disc. All of these features would go unnoticed on a regular street BBK but are advantageous for a track or race application. StopTech Trophy BBK are built with a singular purpose: uncompromised braking performance on the racetrack. With a ultra-rigid caliper design, less brake fade, model-specific piston sizing, and abundant pad options StopTech Trophy brakes will boost your driving confidence and lower your lap times! Drivers in World Challenge, Grand-Am/IMSA, NASA, and SCCA have already benefited from the Trophy brake advantages with numerous wins and championships.